Animate opacity doesn't work properly on IE

Question

I\'m trying to use animate() to change the height and opacity of a div. The div has an image background in CSS. It works fine on Firefox and Safari

Answer 1

I was under the impression that jQuery did the whole opacity support thing for you. Does this work for all browsers?

$('#list_box').animate({opacity: '1',height: '300px',top: newTop},{duration: 300});

Answer 2

Ok this might help a little bit, I found a solution in this site about the exact problem http://blog.bmn.name/2008/03/jquery-fadeinfadeout-ie-cleartype-glitch/

in conclusion, the general problem is the opacity filter on IE, in your specific case there is not much you can do, thought

but in case you fade in and out, the prevent the problem with a png background image you just have to remove the filter attribute the jQuery function added whe the fx ends. Just use a callback function, something like that would do it:

$('#node').fadeOut('slow', function() {<br/>
    this.style.removeAttribute('filter');<br/>
});

in case you selectors returns more than one, use the each function, something like this:

$('.nodes').fadeIn('fast',
    function() {
        $(this).each (
            function(idx,el) {
                el.style.removeAttribute('filter');
             }
        );
     }
);

Answer 3

You do not need to write a special handler for IE, jQuery does it all for you behind the scenes:

jQuery('#list_box').animate({opacity: '1',height: '300px',top: newTop}, 300);

HOWEVER: If you have a 24-bit transparent PNG as your background image that is disappearing, you need to be aware that you cannot combine filter: alpha (which jQuery correctly uses behind the scenes in IE) with a 24-bit transparent PNG in IE7 or IE8. I believe the only way around it is to set a background color (other than transparent) on the object on which you are using filter: alpha

How to test: Simply set a background color on #list_box to a solid color by adding something like this to your CSS after your background-image declaration:

#list_box { background-color: red }

If the background image remains, and your #list_box animates correctly (except for the hideous background) you know what the problem is and will have to find another way to accomplish what you want.

Answer 4

In jQuery, once the div is set to have either opacity:0 (in Standards Compliant Browsers) or filter:alpha(opacity=0) in IE, you can just use

$('#div').animate({opacity:1},100);

Since jQuery supports cross-browser support, if you end up animating the filter via IE, then chances are jQuery is trying to support IE and the conflict comes when jQuery fires the opacity change x2.

I hope this helps. I have had the same issue, plus odd issues with IE not being able to handle fading on a div stack with multiple items in it.

Answer 5

I found a solution that worked for me: position:inline-block; This works for fading text opacity, I haven't tried it with a CSS background image. Maybe it helps anyway.

I just wanted to report a small bug with fadeTo method in Internet Explorer 8. It won't work if your element as "display" set to "inline". I found that you need to put it to "inline-block" and then it works perfectly. There is nothing about this on the web and it's not the first time I have this problem.

Don't know if it's the right way to report this issue, but i'm sure someone will read this post :)

found at http://www.devcomments.com/IE-8-fadeTo-problem-with-inline-elements-to65024.htm

Answer 6

I solved it with adding an opaque background to the animated element:

CSS:

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 195px;
    height: 274px;
    cursor: pointer;
    background: #fff url('../images/common/image_hover.png') 0 0 no-repeat; /* the solution */
    opacity: 0;
    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; /* IE8 */
    filter: alpha(opacity=0); /* IE6-7 */     
    zoom: 1;
}

JS:

$('.overlay').hover(
    function(){
        $(this).animate({'opacity': 0.7}, 300);
    },
    function(){
        $(this).animate({'opacity': 0}, 250);
    }
);

Works for IE7-8

Hope this will help someone ;)